He was addressing the divisions between Jewish Christians and Gentile Christians. The Law was causing division among them.
Grace through faith
Right standing with God
Endurance
Jewish Christians
He identifies himself in Romans 1:1
No, according to Ephesians 2:8-10 and Romans 3:20
Faith
Hope
Jesus because He rose from the dead
He said he tried multiple times but had not been successful according to Romans 1:13.
Hypocrites, blind guides, won't help others attain salvation, etc.
His faith was counted as righteousness before he was circumcised.
Adam
The Old Testament/Mosaic Law
Sheol, gehenna, hades and lake of fire
They "entrusted with the oracles of God"/ the Law (Romans 2:1-2)
He was counted righteous before being circumcised, so his circumcision did not make him righteous. Therefore, it argues the point that gentiles do not have to be circumcised in order to be made righteous before God.
Jesus' death and resurrection
Sin
Satan and his angels
To reveal sin/give knowledge of sin (3:20)
Righteousness is based on faith for both Jews and Gentiles. Abraham's story illustrates this.
It represents His death and resurrection
No. There is no condemnation for those who are in Christ Jesus. Romans 8:1